exam Maths Puzzle Numerical Ability

I have 3 different problems that I am confused about. Please help me. The 1st one is2+3*5square root2-7. #2) (4/2)+4(5-2)square root 2. #3)-8-81/9*2square root 2+7. Can you pleas h

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exam Other Question
The length of a rectangle is 7m more than its worth, and the area of the
rectangle is 98m^2. Find the dimensions of the rectangle. Write an expression for the value of a savings account which has more than double the amount of another.

Thank you Mike